package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> p = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(p.getTotal(), p.getResult());

    }

    @Override
    public void delete(List<Long> ids) {
        for (Long id : ids){
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus()== StatusConstant.ENABLE){
                //不能删除起售中的菜品
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
       List<Long>setmealIds = setmealDishMapper.getSetmealIdByDishId(ids);
        if (setmealIds!=null&&setmealIds.size()>0){
            //不能删除有套餐关联的菜品
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        dishMapper.delete(ids);
        dishFlavorMapper.deleteByDishId(ids);
    }

    @Override
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dish.setUpdateTime(LocalDateTime.now());
        dish.setUpdateUser(BaseContext.getCurrentId());
        dishMapper.updateDish(dish);


    }

    @Override
    public DishVO getById(Long id) {
        return dishMapper.getByIdvo(id);
    }

    @Override
    public void save(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dish.setCreateTime(LocalDateTime.now());
        dish.setUpdateTime(LocalDateTime.now());
        dish.setCreateUser(BaseContext.getCurrentId());
        dish.setUpdateUser(BaseContext.getCurrentId());
        dish.setStatus(StatusConstant.ENABLE);
        dishMapper.insert(dish);
    }
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;

    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Dish dish = Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);

    }
    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.listByCategoryId(dish);
    }
}
